3.5.4.2. 没有匹配标签的节点关联性
以下示例演示了无匹配标签的节点与 pod 的节点关联性:
Node1 节点具有标签
zone:emea
:$ oc label node node1 zone=emea
提示您还可以应用以下 YAML 来添加标签:
kind: Node apiVersion: v1 metadata: name: <node_name> labels: zone: emea
pod-s1 pod 在节点关联性必要规则下具有
zone
和us
键/值对:$ cat pod-s1.yaml
输出示例
apiVersion: v1 kind: Pod metadata: name: pod-s1 spec: containers: - image: "docker.io/ocpqe/hello-pod" name: hello-pod affinity: nodeAffinity: requiredDuringSchedulingIgnoredDuringExecution: nodeSelectorTerms: - matchExpressions: - key: "zone" operator: In values: - us
pod-s1 pod 无法调度到 Node1 上:
$ oc describe pod pod-s1
输出示例
... Events: FirstSeen LastSeen Count From SubObjectPath Type Reason --------- -------- ----- ---- ------------- -------- ------ 1m 33s 8 default-scheduler Warning FailedScheduling No nodes are available that match all of the following predicates:: MatchNodeSelector (1).